sin 1 + sin 2 ..... sin 89
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Step-by-step explanation:
=sin 1+sin2+sin3+......sin89
=sin 1+ sin 2+ sin 3......sin (90-3)+sin( 90-2)+sin(90-1)
=sin1 +sin2+sin3+......cos 3+cos 2+cos1
sin and cos get cancelled
so only sin45 remains after cancelling
so answer=sin45=1/root 2
please mark my answer as brainliest...
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